7270417661 has 4 divisors (see below), whose sum is σ = 7829680572. Its totient is φ = 6711154752.

The previous prime is 7270417589. The next prime is 7270417663. The reversal of 7270417661 is 1667140727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1667140727 = 7 ⋅238162961.

It can be written as a sum of positive squares in 2 ways, for example, as 3710028100 + 3560389561 = 60910^2 + 59669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7270417661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7270417663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279631436 + ... + 279631461.

It is an arithmetic number, because the mean of its divisors is an integer number (1957420143).

Almost surely, 2^7270417661 is an apocalyptic number.

It is an amenable number.

7270417661 is a deficient number, since it is larger than the sum of its proper divisors (559262911).

7270417661 is a wasteful number, since it uses less digits than its factorization.

7270417661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559262910.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 7270417661 is about 85266.7441679345. The cubic root of 7270417661 is about 1937.2534966365.

The spelling of 7270417661 in words is "seven billion, two hundred seventy million, four hundred seventeen thousand, six hundred sixty-one".